Autism Spectrum Disorder: An Overview and Update Brandon Rennie, PhD Autism and Other Developmental Disabilities Division Center for Development and Disability University of New Mexico Department of Pediatrics DATE, 2016 Acknowledgements: Courtney Burnette, PHD, Sylvia Acosta, PhD, Maryann Trott, MA, BCBA
Introduction to Autism Spectrum Disorder (ASD) • What is ASD? • A complex neurodevelopmental condition • Neurologically based- underlying genetic and neurobiological origins • Developmental- evident early in life and impacts social development • Lifelong- no known cure • Core characteristics • Impairments in social interaction and social communication • Presence of restricted behavior, interests and activities • Wide variations in presentation
DSM-5 Diagnostic Criteria • Deficits in social communication and social interaction (3) • Social approach/interaction • Nonverbal communication • Relationships • Presence of restricted, repetitive patterns of behavior, interests, or activities (2) • Stereotyped or repetitive motor movements, objects, speech • Routines • Restricted interests • Sensory*
From Rain Man To Sheldon Cooper- Autism in the Media
1910 Bleuler • First use of the word autistic • From “autos”, Greek word meaning “self”
1943 Leo Kanner
1944 Hans Asperger
1975 1:5000 1985 1:2500 1995 1:500
“When my brother trained at Children's Hospital at Harvard in the 1970s, they admitted a child with autism, and the head of the hospital brought all of the residents through to see. He said, 'You've got to see this case; you'll never see it again.'" -- Thomas Insel, director of National Institute of Mental Health May 7, 2006, Time Magazine
1975 1:5000 1985 1:2500 1995 1:500
Autism and Developmental Disabilities Monitoring (ADDM) Network • Part of Centers for Disease Control (CDC) • Monitors the number of 4- and 8-year-old children with ASDs living throughout the United States at 11 sites • Systematic Record Review of health and educational records (2010)
1:175 Alabama IQ scores 1:45 New Jersey 46% >85 1:42 boys 23% 71-85 1:189 girls 31% < 70 5:1 ratio 1:63 White 1:81 Black 1: 93 Hispanic
Autism a and D Developmental D Disabilities Monitoring ( (ADDM DDM) N Network rk
44% On evaluated by 3 years Average, old for dev. diagnosed after 4 concerns years old
Relevance of Prevalence • Federal • Service Providers (healthcare, school systems) • Research • Policymakers • http://www.cdc.gov/ncbddd/autism/addm.html
Two most common questions 1. Why is the prevalence increasing? 2. What causes autism?
Why is the Prevalence Increasing? • Broadening of diagnostic criteria • Diagnostic substitution • Public awareness • Unknown
What causes ASD? Most cases involve a complex and variable combination of genetic risk and environmental factors that influence early brain development
Risk Factors • Genetic disorders • Tuberous Sclerosis • DiGeorge Syndrome • Fragile X • Down Syndrome • And others… • Sibling with ASD • Other environmental factors • Wendy Chung TED Talk
TED Talk • Wendy Chung TED talk • http://www.ted.com/talks/wendy_chung_autism_what_we_know_ and_what_we_don_t_know_yet
DSM-5
Why was it changed? • APA intends the DSM to reflect most current research and practice • Last revision – 2000 • Confusion and inconsistent application of previous PDD diagnoses
Why was it changed? • Improve sensitivity and specificity • Provide more accurate and descriptive information (Specifiers) • Co-existing conditions and genetic or medical diagnoses • Severity level (based on level of supports) • Intellectual functioning • Language level
Changes Pervasive Developmental Disorder Autism Spectrum Disorder 3 Diagnoses: Autistic Disorder 1 Diagnosis Asperger’s Disorder Autism Spectrum Disorder PDD-NOS 3 “categories” of symptoms Social Interaction (2/4) 2 “categories” of symptoms Communication Social Communication (3/3) RRB RRB (2/4)
Changes Pervasive Developmental Disorder Autism Spectrum Disorder No indication about sensory differences Added hyper- or hypo- reactivity to sensory input Language delay criteria Delay in language removed Included Childhood Disintegrative Disorder and Retts Disorder Removed Childhood Disintegrative Disorder and Retts Disorder
Changes Pervasive Developmental Disorder Autism Spectrum Disorder Must be present before age 3 years Present in the early developmental period but may not become fully manifest until social demands exceed limited capacities, or may be masked by learned strategies in later life
DSM-5 Social Communication Persistent deficits in social communication and social interaction across multiple contexts, as manifested by the following, currently or by history: • Social-emotional reciprocity • Nonverbal communication behaviors • Developing, maintaining and understanding relationships
DSM-5 Restricted and Repetitive Behaviors Restricted, repetitive patterns of behavior, interests, or activities, as manifested by at least two of the following: • Stereotyped or repetitive motor movements, use of objects, or speech • Insistence on sameness, inflexible adherence to routines, or ritualized patterns of verbal or nonverbal behavior • Highly restricted, fixated interests that are abnormal in intensity or focus • Hyper- or hyporeactivity to sensory input or unusual interest in sensory aspects of the environment
Additional DSM-5 Criteria • Symptoms must be present in the early developmental period (might not manifest or be noted until later) • Symptoms cause significant impairment in social, occupational, or other important areas of current functioning • Disturbances are not better explained by intellectual disability or global developmental delay (note comorbid diagnosis)
Diagnostic Specifiers DSM-5 299.0 Autism Spectrum Disorder • Level of Support required (i.e., Severity) • With or Without intellectual impairment • With or Without language impairment • Associated with known medical or genetic condition or environmental factor • Associated with another neurodevelopmental, mental or behavioral disorder (e.g., ADHD) • With catatonia
Severity Level: Social-Communication • Without supports, deficits in social Level 1: requiring support communication cause noticeable impairments; e.g., atypical or unsuccessful responses to social overtures Level 2: requiring substantial • Marked deficits in verbal and nonverbal social support communication, apparent even with supports Level 3: requiring very substantial • Limited initiation and minimal response to support social overtures
Severity Level: Restricted, repetitive behaviors • Level 1: requiring support • Causes significant interference with functioning in one or more contexts • Level 2: requiring substantial • Appear frequently and interfere support with functioning across a variety of contexts • Extreme difficulty with change, • Level 3: requiring very markedly interfere with functioning substantial support in all spheres
Additional Changes • Can now have comorbid diagnoses: • Language Disorders • Global Developmental Delay (under 5 years old) • Attention-Deficit/Hyperactivity Disorder • Anxiety and Mood Disorders • Medical Comorbidities
Comorbidity Fragile X Intellectual Genetic Tuberous sclerosis Disability conditions Tourette syndrome Mood ASD Anxiety Disorder Seizure disorders Language Medical ADHD Gastrointestinal disorders Disorder Conditions Feeding and eating problems Sleep disorders
Sample Diagnosis 1 • DSM-IV-TR • Axis I: Autistic Disorder (299.00) • Axis II: Intellectual Disability, Mild (317.0) • Axis III: Seizure Disorder, NOS (780.39) • Axis IV: school difficulties, sibling conflict • Axis V: GAF: 55
Sample Diagnosis 1 DSM-5 Autism Spectrum Disorder associated with Seizure Disorder: • Currently requiring substantial supports for deficits in social communication and support for restricted, repetitive behaviors. • With accompanying intellectual impairment (Intellectual Disability, Mild; 317.0) • With accompanying language impairment (phrase speech, delays in receptive and expressive communication • Not associated with any known genetic cause (appointment pending)
No more Asperger’s? • Asperger’s Disorder is no longer a distinct diagnostic category • “…identity that represents this an individuals specific strengths and challenges” • New diagnostic structure allows for descriptive information to convey these strengths and challenges • More individualized for everyone receiving a diagnosis
How does this affect people with ASD and their families? Will we need to get a new evaluation for diagnosis? • A person with a well- established diagnosis of Autistic Disorder, Asperger’s or PDD-NOS does not need a new evaluation – they should be given a diagnosis of Autism Spectrum Disorder
Break
Best Practice in ASD Assessment
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